CN102946711A

CN102946711A - Multifunctional rotary cutting head for cutting devices, and portable devices comprising such a cutting head

Info

Publication number: CN102946711A
Application number: CN2011800201560A
Authority: CN
Inventors: R·佩朗
Original assignee: Pellenc SAS
Current assignee: Pellenc SAS
Priority date: 2010-04-21
Filing date: 2011-04-18
Publication date: 2013-02-27
Anticipated expiration: 2031-04-18
Also published as: US9363946B2; CN102946711B; JP2013524803A; FR2959151B1; EP2380426B1; BR112012024509A2; EP2380426A1; US20130205596A1; FR2959151A1; JP5771684B2; WO2011131860A1

Abstract

Disclosed are a multifunctional rotary cutting head (1) for cutting devices as well as portable devices equipped with such a cutting head. The cutting head comprises a rotary housing that consists of at least a top part (1A) and a bottom part (1B) and accommodates a support (2) for one or more cutting elements or tools. The support (2) is penetrated by an axial drive shaft (6) on which the support (2) is mounted. The support (2) for the cutting element(s) or tool(s) has two levels for selectively mounting the cutting element(s) or tool(s), i.e. a first level designed to mount strands of cutting wire (3) and a second level designed to mount an interchangeable cutting blade (5).

Description

Be used for the Multifunctional rotary cutting head of cutting equipment and the portable set that comprises this cutting head

Technical field

The present invention relates to a kind of Multifunctional rotary cutting head.It is particularly useful for equipping portable cutting equipment, such as trimmer, be also referred to as mower or grass mower, brush saw, motorization long-handled sickle, hedge trimmer etc.

Background technology

In general, be low lawn or the meadow of cutting intensity with the function of the equipment of the name class of trimmer or mower usually.The cutting head that is used for this purpose generally is such type, that is, its cutting member is made of the flexiplast silk, for example nylon yarn that become thigh.On the other hand, being used for cutting, the device of lignified plant (shoot of undershrub, grove or trees, large herbaceous plant, hedge etc.) often is called brush saw, hedge trimmer, the rotating blade that their cutting head uses metal or duroplasts to make.As example, for example can enumerate document US-2001/0023542, US-6401344, US-6944956, WO-2004/064489, WO-2005/032237, WO-2006/017372, WO-2008/139246, FR-2888085, they have described the various possible arrangement that utilizes the cutting head of the cutting member that is made of the flexible cutting wire that becomes thigh.Utilize the example of the cutting head of Metal Cutting blade for example in document WO-2007/099443, to describe to some extent.

These cutting heads are installed in the U-shaped handle of the engine that is equipped with guiding and control to drive this cutting head rotation or the distal end of dual-handle action bars, and are equipped with for the ring that fixedly carries tackling.

Present available portable set or be designed for single cutting tool type on market, it perhaps is multiduty portable cutting equipment, some machine is prepared a removable particular header for each these part type: one is used for cutting wire, and one is used for metal blade etc.

If wish from a kind of type conversion to be another kind of type, another support of then necessary all or part of removal bracket, and all or part of usefulness replaces.One or several instruments need to be dismantled and utilize to these two kinds of cantilever type.This situation also has following shortcoming:

-need the training user to remove (often being left hand helix)/dismantle and refill and join the cutting tool support, this requires to utilize and will make things convenient for cutting tool in one's hands;

-the loss of time and the danger that damages; In dismounting with refill timing and lose part.

Commonly, remove the situation on the surface of work owing to will realize cropping or shrub, the user need to hold be used to (for example cutting soft meadow, around trees or be positioned at such as near the ground the hard barriers such as wall edge, avenue or grove etc.) the equipment with cutting wire, be used on hard tall and big meadow or in woody plant (brambles, fern etc.) or remove in a clump of trees shrub or be used for pruning the equipment of the band blade of hedge or grove thinning.Can imagine that this situation can cause the raising of cutting material buying expenses and initial cost.

In order to alleviate the shortcoming of the above-mentioned type equipment that is exclusively used in specific cutting work, a kind of undershrub brush saw is proposed in document WO-2007/099443, be used for the combination cutting of meadow and grove, this instrument comprises rectangular blade, this blade has for the medium pore that undershrub brush saw gear piece is connected on the swivel head, and make with suitable material, described material is provided with a pair of cylindricality through hole, in order to insert the little silk of nylon or other duroplasts systems.This instrument allows to mow simultaneously and cut undershrub, avoids the installation and removal operation of blade, also effectively realizes simultaneously the decomposition of grass and shrub.

Even allow to cut simultaneously grass and little woody plant so that with the material fragmentation that is cut, this instrument still is not multipurpose tool, and it does not allow the grass cutter equipping trimmer or need to work near hard barrier.

Summary of the invention

The objective of the invention is to overcome the shortcoming of the portable cutting equipment of aforementioned trimmer or brush saw.

According to described Implementation Modes, cutting head of the present invention is characterised in that, it comprises the housing (box body) of rotation, this housing is made of two parts at least, it is the bottom part that top part and the base portion (bottom) that is assemblied in described top part are located, the support of cutting member or cutting tool is housed in this housing, axially driving shaft passes from this support and rotates (in connection aspect the rotation) with this support with being connected, the top part of this driving shaft is mounted to the engine that can be connected to portable cutting equipment, the support of described cutting member or cutting tool is mounted to the possibility that has in the limited axially-movable of the enterprising line amplitude of described axial driving shaft, the support of described cutting member or cutting tool has two levels that selectivity is installed cutting member or cutting tool, that is:

-for the first order that the cutting thread is installed, and

-for the second level that removable cutting blade is installed.

According to a preferred Implementation Modes, the support of described cutting member or cutting tool is provided with two levels that selectivity is installed this cutting member or cutting tool, that is:

-for the first order that the top of cutting thread is installed, and

-be used for installing the second level of the bottom of removable cutting blade.

This cutting head comprises that locking (locks, lock) or split (separation, release) device of selected cutting member, this device be shaped so that simultaneously the opposite direction that applies to the described support of described shell body and cutting member or cutting tool to axial motion will :-or make the level corresponding with selected cutting member or cutting tool be in the position that allows to lay (location) or take out described cutting member;-or described cutting member is locked on the described carrier stage corresponding with selected cutting member type.

According to a preferred and favourable Implementation Modes, this shell body becomes with the rack arrangement of this cutting member or cutting tool, simultaneously to described shell body be contained in described support in this shell body and apply the convergence type axially-movable and can allow the level corresponding with selected cutting member type to be in the position that allows to lay or take out this cutting member, apply the separate type axially-movable to described shell body and described support simultaneously and then allow described cutting member automatic locking on the carrier stage corresponding with selected cutting member type.

Arrange according to another feature, it is automatically to obtain under the effect of elastic recovery device that the convergence type of the support of shell body and cutting member or cutting tool moves to axial, in order to allow cutting member or cutting tool to be automatically locked afterwards in being placed to this cutting head.

According to a preferred Implementation Modes, this elastic recovery device is made of the spring that works by compression and be inserted between the support of the internal partition of this shell body and inner cutting member or cutting tool.

Arrange according to another feature, the level on the support top of cutting member or cutting tool comprises retaining mechanism, embed the cutting thigh in the shell body of this cutting head with the hole that is used for the sidewall by being arranged on this housing, this cutting thigh rotates with the described support of this retaining mechanism with being connected, this retaining mechanism comprises tight (clamping) cam of pincers, this clamps tight cam and is mounted to and has parallel to each other and be parallel to the ability that the plane of the rotation of this cutting head pivots, the support of this cutting member or cutting tool is mounted to has the ability of carrying out the limited axial translation of amplitude in the shell body of this cutting head, the support of this shell body and this retaining mechanism is complementally arranged, so that can be used to allow to lift this, the convergence type axially-movable that applies to described shell body and described support simultaneously clamps tight cam, in order to allow the cutting burst introducing in this cutting head, slide or lay, the separate type axially-movable that applies to described shell body and described support simultaneously then allows to reduce this cam, to realize the cutting burst locking on the active position in this cutting head.

Arrange according to another feature, this retaining mechanism comprises for guiding and lays two passages that cut thigh, be arranged to these two channel parallel the rotation both sides of cutting head and towards the opening of shell body, the intake section of each is (naked) that opens wide in these passages, pivot cam is installed in the opposite of this open section, this cam is subject to the effect of spring, this spring tends on the direction of described open section the tight face application of force of pincers to this cam, lay the interior cutting thigh of passage to make it the bottom against this passage in order to push down forcefully to be bonded on, guarantee thus the locking of described cutting thigh.Be provided with the finger-like impeller in this shell body, this finger-like impeller is connected with the upper spacer of described shell body, and allow to push back this cam and make this cam pivots, when standing to tend to make the approximating convergence pressure of upper surface of support of the upper spacer of described shell body and retaining mechanism with the support of box lunch this shell body and this retaining mechanism, eliminate its pressure in cutting strand.

Arrange according to another feature, this cutting blade removably inserts between the top part and bottom part of shell body.According to this significant Implementation Modes:

The lower stage of the support of-cutting member or cutting tool is made of blade support, this blade support and cutting blade are provided with to be laid and rotates the compensation device that connects cutting blade, and this device can be by manually applying that convergence type moves to axial and from the active position release to the support of described shell body and described blade simultaneously;

-this compensation device guarantees the axial locking of this cutting blade on the distal portions of driving shaft;

-when blade was placed on the described blade support, coupling arrangement provided this blade to be connected automatic rotation with blade support to connect.

Arrange according to another feature, the middle body of this blade comprises:

-on the one hand, central opening, two connection holes that are arranged on described central opening both sides that pass for driving shaft, have outer peripheral two the punching sections of curve (hole, opening); With

-on the other hand, allow this blade to be inserted in the distal portions of rotating shaft until the solid section of its lock position (entity part).

According to another favourable embodiment, the middle body of this blade support and this blade is arranged to and allows described blade to move to axial by their convergence type and rotatablely moving of blade subsequently is installed on the described blade support; Can remove the blade that is using by opposite motion.

According to another embodiment, cutting blade laid and is connected to the device on the blade support, comprise on the one hand two connection short columns that are arranged on the following of described blade support and are positioned at the axially open both sides on this blade support, two holes that comprise on the other hand the axially open both sides that are formed on this blade, the distal portions of driving shaft are engaged in described two holes.

According to another preferred embodiment, the rotation that is positioned at inner blade support and shell body connects by means of the rotation that is connected with the inner surface of the upper spacer of shell body and be parallel to cutting head and realizes that towards the drive pin of this cutting head inner orientation these drive pins are bonded into the ability of sliding in the groove that has in being arranged at this blade support.

According to another embodiment, this connection groove is arranged at least two opposition sides of blade support.

Arrange according to another feature, driving shaft passes the axial passage that is formed in this blade support, this driving shaft pass part and described axial passage has complementary profile, rotate to allow driving described support.

According to a preferred embodiment, described cutting head comprises for the device that pass axial translation amplitude part on of restriction blade support at driving shaft.

Arrange according to another feature, this cutting head comprises for the device that blade support is locked on the driving shaft.

According to a preferred embodiment, be used for cutting blade axially is locked at the axially open that device on the driving shaft comprises this cutting blade on the one hand, be included on the other hand on the distal portions of this driving shaft and apart from the ring-shaped groove of its end certain distance, the end of described driving shaft from described groove rounded shape, be provided with two along the relative longitudinal concave groove of diameter, and the axially open of this cutting blade has the convex shape identical with described end profile.

Arrange according to another feature, the lower limb of shell body top part and this cutting blade are provided with lays compensation device.

According to a preferred Implementation Modes, the compensation device of laying of this shell body and this cutting blade comprises on the one hand by the arc outward flange and defines and be positioned at the alignment line both sides of blade upper shed and equidistant two holes with it, comprise on the other hand the base portion place that is positioned at this top part along diameter relative guiding and stop tab, at least one end in this hole extends by a breach.

Arrange according to another feature, the lower sidewall part of shell body and the circular upper of the bowl that slides partly are equipped with complementary holding device, its assembling only need to make these two parts move to axial, then carries out limited the rotatablely moving of amplitude, so that the complementary member of described holding device engages.

Arrange according to another feature, the holding device one side of shell body and bowl comprises at least two along the convex shoulder of the relative rounding of diameter near the lower circular edges of the inner surface of the cylindrical side wall of shell body and along this lower limb, comprise on the other hand at least two along diameter hook lug relative, that be parallel to the Axis Extension of the bowl that slides, the free end of this hook lug is provided with to the stop pin of this axis direction orientation or leading edge (lug boss).

This cutting head preferably includes the stop part of an end that is arranged on each convex shoulder, and this locking pin of this stop limits or leading edge rotatablely moves when the bowl that slides is installed on the rigging position.

According to another favourable arrangement, during assembling shell body each several part, the convex shoulder of the edge of this leading edge and the rounding of this leading edge is provided with the complementary locking device of locking when finishing rotatablely moving.

According to a preferred Implementation Modes, the top part of this shell body and the complementary locking device of bottom part are comprised of plush copper and otch, this plush copper is positioned at the upper surface of convex shoulder, and this otch is arranged on the outward flange of leading edge, automatically is bonded in this otch in the described locking plush copper of the destination county that rotatablely moves of assembling.

According to portable cutting equipment of the present invention, feature and advantage such as mower, trimmer, brush saw, motorization long-handled sickle or hedge trimmer etc. are, it is equipped with the rotary cutting head that utilizes the flexible cutting wire of multiply or cutting blade that comprises above-mentioned feature according to the work that will carry out.

Description of drawings

From the detailed description and the accompanying drawings hereinafter, will find out better above-mentioned target, feature and advantage etc., in the accompanying drawings:

Figure 1A is the perspective view according to cutting head of the present invention, and it has been equipped with the flexible cutting wire of multiply and can be equipped with cutting blade;

Figure 1B is the perspective view according to cutting head of the present invention, and it has been equipped with cutting blade and can be equipped with the flexible cutting wire of multiply;

Fig. 2 is the perspective view that has been equipped with the cutting head of changeable cutting blade according to of the present invention, and the bowl that wherein slides is removed;

Fig. 3 Aa is the front view that is equipped with the cutting head of multiply cutting wire, and it is in the unlocked position;

Fig. 3 Ab is the cutting head front view that is equipped with cutting blade, and it is in latched position;

Fig. 3 Ba is the cutaway view along the line Ea-Ea of Fig. 3 Aa;

Fig. 3 Bb is the cutaway view along the line Eb-Eb of Fig. 3 Ab;

Fig. 3 Ca is the cutaway view along the line La-La of Fig. 3 Ba;

Fig. 3 Cb is the cutaway view along the line Lb-Lb of Fig. 3 Bb;

Fig. 3 Da is the cutaway view along the line Ka-Ka of Fig. 3 Ba;

Fig. 3 Db is the cutaway view along the line Kb-Kb of Fig. 3 Bb;

Fig. 3 E is along the bottom view of the line R-R of Fig. 3 Ba and cutaway view (unlocked position);

Fig. 3 Aa to 3F illustrates the multiply cutting wire and is placed in stage in the housing, and this retaining mechanism that consists of like this support higher level of removable cutting member or cutting tool is in a high position, allows to pack up the tight cam of pincers and cutting wire is introduced described mechanism;

Fig. 4 A is a perspective view, illustrates on the lower surface of the top part that manually metal blade is installed in shell body or against phase I that this lower surface is laid;

Fig. 4 B is the bottom view of Fig. 4 A after regaining cutting blade and slip bowl;

Fig. 4 C be Fig. 4 A do not slide the bowl part exploded external view;

Fig. 5 A is the bottom, cross-sectional view along the line E-E of Fig. 5 B;

Fig. 5 B is the cutaway view along the line D-D of Fig. 4 C;

Fig. 5 C is the detail drawing along the flag F of Fig. 5 B;

Fig. 6 A is the perspective view that is similar to Fig. 3 A, and the second stage of laying metal blade is shown;

Fig. 6 B is the bottom view of Fig. 6 A of bowl of not sliding;

Fig. 6 C is the external view of Fig. 6 A of bowl of not sliding;

Fig. 7 A is the cutaway view along the line E-E of Fig. 6 C;

Fig. 7 B is the cutaway view along the line D-D of Fig. 6 C;

Fig. 7 C is the detail drawing according to the flag F of Fig. 7 B;

Fig. 8 A is the perspective view that the phase III of laying of metal blade is shown;

Fig. 8 B is the bottom view of Fig. 8 A, and the bowl that wherein slides removes;

Fig. 8 C is the external view of Fig. 8 A, and bowl does not slide;

Fig. 9 A is the cutaway view along the line E-E of Fig. 9 B;

Fig. 9 B is the cutaway view along the line D-D of Fig. 8 C;

Fig. 9 C is the detail drawing according to Fig. 9 B flag F;

Figure 10 A is the perspective view that the quadravalence section of laying of metal blade is shown, and it is in latched position;

Figure 10 B is the bottom view of Figure 10 A;

Figure 10 C is the external view of Figure 10 A, and bowl does not slide;

Figure 11 A is the cutaway view along the line E-E of Figure 11 B;

Figure 11 B is the cutaway view along the line D-D of Figure 10 C;

Figure 11 C is the detail drawing according to Figure 11 B flag F;

Figure 12 A is front view, illustrates to be equipped with the cutting head that multiply is in the cutting wire of latched position,

The bowl that wherein slides is in the unlocked position;

Figure 12 B is front view, and the cutting head that is equipped with the metal blade that is in latched position is shown;

Figure 13 A is the cutaway view along the line M-M of Figure 12 A, and the bowl that slides is in the unlocked position;

Figure 13 B is the cutaway view along the line M-M of Figure 12 B, and the bowl that slides is in latched position;

Figure 14 A is the cutaway view along the line N-N of Figure 13 A;

Figure 14 B is the cutaway view along the line N-N of Figure 13 B;

Figure 15 A is the cutaway view along the line M-M of Figure 12 A, and the bowl that slides is in the unlocked position;

Figure 15 B is the cutaway view along the line M-M of Figure 12 B, and the bowl that slides is in latched position;

Figure 16 A is the cutaway view along the line N-N of Figure 15 A;

Figure 16 B is the cutaway view along the line N-N of Figure 15 B; And

Figure 17 is the perspective view of mower that utilizes the cutting head of metal blade according to outfit of the present invention.

Embodiment

With reference to the meaningful of description of drawings multi-functional cutting head of the present invention but nonrestrictive embodiment.

In the disclosure below and in claims, for the ease of description of the invention, term " height ", " low ", " on ", D score, " side direction ", " upper cycle ", " lower stage " etc. all be take this cutting head position in the course of the work as reference when the axis vertical orientation of cutting head.Thereby these terms and phrase are without any limited characteristic.

Cutting head 1 comprises the housing of rotation, this housing is that top part 1A and the bottom part 1B-that is assemblied in the base portion place of this top part consist of by at least two

part

1A and 1B-, mode with axial translation ability with limited amplitude in this housing is equipped with cutting member (Figure 1A and 1B) or

cutting tool

3,5 support 2, axially driving shaft 6 passes this cutting member and rotates with described support 2 with being connected, the top part of this driving shaft is arranged to connect the engine of portable cutting equipment, the support of described cutting member or cutting tool is mounted to has the ability of carrying out the axially-movable of Finite Amplitude degree at described axial driving shaft 6, the support of described cutting member or cutting tool is provided with optionally to install two levels of this support, that is:

The first order on-top is used for installing multiply cutting wire 3 (figure Aa to 3F), and

The second level of-bottom is used for removably installing removable cutting blade 5 (Fig. 4 A to 10C).

This cutting head comprises for locking or splits the device of selected cutting

member

3 or 5, and this device is designed to apply to the support 2 of described shell body 1A and described cutting member or cutting tool simultaneously the to axial motion of opposite direction, thereby:

-make the level corresponding to selected cutting

member

3 or 5 place the position that allows to lay or regain described cutting member,

-or selected cutting member is locked on the corresponding level of cutting member type described support and selected.

According to this embodiment, the support 2 of shell body 1A and cutting member or cutting tool is arranged to simultaneously to apply the convergence type axially-movable to described housing and the described support that is contained in this enclosure interior and can allows and will place the position that allows to lay or regain described cutting member with selected cutting

member

3,5 corresponding levels, can allow automatic locking on the corresponding level of the cutting member type with selected of support and apply the separate type axially-movable to described housing and described support simultaneously.

The convergence type of shell body 1A and cutting member or cutting

tool

3,5 support 2 moves through to axial that elastic recovery device 7 effects are lower to be realized automatically, in order to allow cutting member or cutting tool automatic locking after being placed to cutting head.

This elastic recovery device is made of spring 7, and this spring works by compression and is inserted between the internal partition 4 of this shell body and inner cutting member or cutting

tool

3,5 the support 2.

The following describes cutting member support (2) upper cycle may but the embodiment of non-limiting setting, this is the theme of a patent application submitting to separately on the same day of the applicant.

The upper cycle of the support of cutting member or cutting tool comprises retaining mechanism 8, it is used for hole 1C by the sidewall 1D of the shell body 1A that is arranged on cutting head and engages into cutting thigh in this shell body, this cutting thigh rotates with described retaining mechanism with being connected, this retaining mechanism comprises the tight cam 9 of pincers, this clamps tight cam and is mounted to and has parallel to each other and be parallel to the ability that the plane of cutting head rotation pivots, the support of this cutting member or cutting tool is mounted to has the ability of carrying out the axial translation of limited amplitude in the shell body of cutting head, the support 2 of this shell body 1A and retaining mechanism complementally is arranged to, apply simultaneously convergence type axially-movable (Fig. 3 Ba arrow F1) to described housing and described support and can allow slightly to lift the tight cam of pincers, in order to allow the introducing of cutting strands 3 in the cutting head, slide or lay, described housing and described support are applied separate type axially-movable (Fig. 3 Bb arrow F2) simultaneously then can allow to reduce this cam, be locked on the active position in the cutting head in order to will cut thigh.

This retaining mechanism comprises that two of cutting thigh 3 guide and lay passage 2H, the opening 1C of shell body is also faced in the both sides that are arranged on to described channel parallel cutting head rotation 6, the intake section of each opens wide in these passages, and pivot cam 9 is installed in the opposite of this open section.This cam is subjected to the effect of spring 10, this spring tends on the direction of described open section the tight face application of force of pincers to this cam, be bonded on this and lay cutting thigh in the passage in order to strongly push down against the bottom of laying passage, guarantee the locking of described cutting strand with this.This enclosure interior is provided with finger-like impeller 12, this finger-like impeller is connected with the upper spacer 4 of described housing, and the upper spacer 4 that stands to tend to make described shell body when the support of this shell body and this retaining mechanism is during near the convergent force of the rack upper surface of these retaining mechanisms, allow to push back this cam and make this cam pivots, in order to eliminate the pressure of cam on cutting thigh 3.

The permission that this cutting head is described below install removable cutting blade 5 lower stage may but the embodiment of non-limiting setting, this set is that the applicant is in the theme of a patent application of submitting to separately on the same day.

According to this embodiment, cutting blade 5 is inserted between the top part 1A and bottom part 1B of shell body.

More precisely:

The lower stage of the support of-cutting member or cutting tool 5 is made of blade support 2, this blade support and this cutting blade 5 are provided with to be laid and rotates the compensation device that connects this cutting blade, and this device can be by applying manually that convergence type moves to axial and throw off from its active position to described housing and described blade support simultaneously;

The middle body of-this blade comprises:

-on the one hand, central opening 5B, two the connection holes 5F that are positioned at these central opening both sides that confession driving shaft 6 passes through, two punching sections 13 with extra curvature edge 13A;

-on the other hand, and solid part 5E, this solid part is urged to its latched position so that can will be positioned at the blade of the distal portions of rotating shaft.

The middle body of blade support and blade 5 is arranged to allow move to axial and then make blade be rotated motion described blade is installed on the described blade support 2 by making blade and support carry out convergence type; Remove this blade by opposite motion.

For the device of cutting blade being laid and being connected on the blade support, comprise that two connection short columns 14, described connection short column are arranged on the following of described blade support and are in the lower openings both sides of axial passage 24 on the one hand; Comprise on the other hand two hole 5F of the axially open 5B both sides that are positioned at blade, the distal portions 6A of driving shaft 6 can be engaged in the described hole.

According to another preferred embodiment, the rotation of inner blade support 2 and shell body 1A connects by drive pin 11 realizations, described drive pin is connected with the inner surface of the upper spacer 4 of this housing and is parallel to the rotation of cutting head towards the inner orientation of this cutting head, and these drive pins 11 are bonded into and can slide among the groove R in being formed at blade support.

Connect at least two opposition sides that groove R is formed on blade support.

Arrange according to another, driving shaft 6 passes the axial passage 24 that is formed in the blade support 2, this axle pass part and described axial passage has

complementary profile

2C, 6D, rotate in order to allow to drive described support 2.

According to a preferred embodiment, described cutting head comprises for the device that pass part on the amplitude of axial translation of the support that limits blade 5 at driving shaft 6.This device comprises for example two snap rings (retainer) 17, and described snap ring is bonded among the annular groove 6C that is arranged on the driving shaft 6.This cutting head comprises for the device that blade support is locked on the driving shaft.

According to a preferred embodiment, permission axially is locked at device on the driving shaft 6 with cutting blade 5, on the one hand, comprise the axially open 5B on this cutting blade, on the other hand, the distal portions 6A that comprises driving shaft is upper, apart from the ring-shaped groove 6C of its a distance, end, the end sections of described driving shaft has round-shaped from this groove, this is round-shaped to have two along the relative longitudinal concave groove 6D of diameter, and cutting blade axially open 5B has the convex shape 5C identical with the profile of described end sections.

Arrange according to another, the lower limb 21 of the top part 1A of housing and cutting blade 5 are provided with complementary placing device 13-33.

The complementary placing device of housing 1 and cutting blade 5, on the one hand, comprise two holes 13, these two holes defined by arc outward flange 13A and be positioned at the opening 5F on the blade 5 radially alignment line both sides and with this alignment line equidistant, on the other hand, comprise the top part 4 that is arranged on shell body the base portion place along diameter relative guiding and stop tab 33.

According to another feature arrangement of the present invention, the circular upper of the part of the sidewall 1D of this housing and this slip bowl partly is equipped with

complementary holding device

15,16, its assembling only need make these two parts move to axial, then carry out limited the rotatablely moving of amplitude, just allow the complementary member of described holding device to engage.

According to another arrangement, the holding device of housing 1A and bowl 1B, on the one hand, near the circular lower edge of the inner surface of the cylindrical side wall 1D of this housing and along this lower limb, comprise at least two along the convex shoulder 16 of the relative rounding of diameter, on the other hand, comprise at least two along the relative hook lug 15 of diameter, described hook lug is parallel to the Axis Extension of the bowl that slides, and the free end of this hook lug is provided with along the locking leading edge of the direction orientation of this axis or protruding pin 15A.

This cutting head preferably includes the stop part 16A at an end place that is positioned at each convex shoulder 16, in order to limit rotatablely moving of this locking leading edge or protruding pin 15A during the bowl that will slide places bonding station.

According to another favourable arrangement, the convex shoulder 16 of the edge of leading edge 15 and the rounding of stop part is provided with and is advancing line-locked compensation device during the each several part of this housing of assembling when rotatablely moving end.

According to a preferred embodiment, the compensation device that the bottom part of housing is locked on the part of top is made of the plush copper 17 on the upper surface of this convex shoulder 16 and the otch 18 that is arranged on the outward flange 15A of leading edge, and rotatablely moving in assembling, described locking plush copper engages in the described otch automatically when finishing.

Be appreciated that the installation and removal of removable movable blades 5 on cutting head from top description, consider the installation of cutting blade on cutting head:

-remove the bowl 1B that slides by rotatablely moving, so that convex shoulder 16 and hook lug 15 are thrown off; This exterior semi-spherical surface comprises two along the relative impression 28 of diameter, so that should operate;

-blade 5 placing (because the complementary contours of the axially open 5B of described end and blade 5, it is possible only having a position) on the end of driving shaft 3, this cutting blade rests on the short column 14 of blade support 2 in this position;

-make cutting blade support 5 and shell body 1 carry out the approaching motion of convergence type by the pressure that on the cutting blade 5 that rests on the driving short column 14 of blade support, manually applies appropriateness, until described blade 5 arrives the position of groove 6C; Can see, the driving short column 14 of blade support 2 be attached to the solid section 5E of this blade upper and with attachment openings 5F at a distance of 90 °.In fact, thisly approach motion by the convergence type of realizing by pushing broach 5 and have the antagonism that overcomes spring 7 and the effect of moving blade support 2a;

-make blade rotate about 90 °.In the process of this effect, blade is guided by arc opening 13, and this arc opening is connected with the base portion of shell body 1A and slips into this opening for the block 33 that centers.When this rotatablely moves end:

-on the one hand, charge between the wall of the ring-shaped groove 6C that male member among the axially open 5B of cutting blade 5 or lobes be bonded on driving shaft 6, and

-on the other hand, connecting short column 14 and under the effect of spring 7, automatically stretch among the connection holes 5F, blade support 2 moves axially along driving shaft 6 under the effect of Compress Spring 7, until till withstanding on the maintenance snap ring 20 of described driving shaft.

For ease of in this rotary course of blade 5, blade support 2 being remained on the fixed position, described blade support 2 arranges two tenons 29 on the surface thereon, these two tenons are engaged into when upwards displacement occurs for described blade support in two holes 30 on the upper spacer 4 of shell body 1, so that engage be formed on cutting head 1 as in the hole 31 on the fixed support 32 of hood 37, avoid thus in described blade support 2 rotations of this operating period.

-by carrying out axially-movable and then making the bowl 1B that slides with respect to shell body 1 rotation described slip bowl 1B be set back.

For retracting blade 5:

Must remove the bowl 1B that slides, then must press the connection short column 14 of blade support 2, so that these short columns withdraw from from the hole 5F of blade 5, and make about 90 ° of described blade 5 rotations.

These drive the downside that short column is in again cutting blade 5 again, and lobes 5A is in the face of the complementary contours of driving shaft 6, this allows cutting blade 5 to move along the direction of the distal portions of driving shaft 6, until it is till throwing off from described driving shaft under the effect of the blade support 2 that Compress Spring 7 is applied to it.

The invention still further relates to and be equipped with the portable cutting equipment that maybe can be equipped with the cutting head that comprises above-mentioned feature, such as mower, trimmer, brush saw, hedge trimmer etc.

An Implementation Modes integral body of this equipment indicates with Reference numeral 35 at Figure 17, and this equipment generally comprises: action bars 36, and this action bars is at its distal end supporting cutting head 1 (1A, 1B, 1C); Motorized device 37, this motorized device are installed on the bottom part or top part of action bars, in order to drive this cutting head rotation; Be used for guiding and controlling U-shaped handle or the dual-handle 38 of this motorized device; In order to the ring 39 that fixedly carries tackling 40.The motorized drive arrangement of this cutting head can be by Thermal Motor or by guaranteeing by the portable battery pack power supply or by the electromotor that is connected to the utility grid power supply.

Claims

1. Multifunctional rotary cutting head (1), the portable set that is used for cutting equipment and this cutting head of outfit, it is characterized in that, this cutting head comprises the housing of rotation, this housing is made of at least two parts (1A-1B), namely, top part and the bottom part that is installed in the base portion place of described top part, mode with the axial translation ability that makes it to have limited amplitude in this housing is equipped with cutting member or cutting tool (3,5) support (2), axially driving shaft (6) passes this support, this driving shaft rotates with described support with being connected, and the top part of this driving shaft is arranged to be connected to the engine of portable cutting equipment, the support of described cutting member or cutting tool is mounted to has the possibility of carrying out the axially-movable of Finite Amplitude degree at described axial driving shaft, the support of described cutting member or cutting tool is provided with two levels that cutting member or cutting tool are installed for selectivity, that is:

-be arranged to the first order be used to the cutting wire (3) that is mounted to strand, and

-be arranged to be used to the second level that removable cutting blade (5) are installed.

2. according to the Multifunctional rotary cutting head (1) that is used for cutting equipment of claim 1, it is characterized in that,

The first order on-top is arranged to be used to the cutting wire (3) that is mounted to thigh, and

The second level of-bottom is arranged to for removable cutting blade (5) removably is installed.

3. according to the Multifunctional rotary cutting head of claim 1 and 2, comprise selected cutting member (3,5) carry out the device (8) of locking or release, this device is shaped so that simultaneously the to axial motion that the support to described shell body and described cutting member or cutting tool applies opposite direction can cause:

-corresponding with selected cutting member type level is in allow to lay or regain in the position of described cutting member (3,5);

-or with described cutting member (3,5) be locked at cutting member type described support and selected corresponding the level on.

4. according to the Multifunctional rotary cutting head of one of claims 1 to 3, it is characterized in that, shell body (1) and cutting member or cutting tool (3,5) support (2) is arranged to described housing and is contained in this support in this housing apply simultaneously the convergence type axially-movable and can be used to allow to make the level corresponding with selected cutting member type to be in and allow to lay or regain in the position of described cutting member, and to described housing and support apply simultaneously the separate type axially-movable can allow with described cutting member automatic locking cutting member type this support and selected corresponding grade on.

5. according to the Multifunctional rotary cutting head of claim 1 to 4, it is characterized in that, this shell body (1) and this cutting member or cutting tool (3, it is automatically to obtain under the effect of elastic recovery device (7) that the convergence type of support 5) (2) moves to axial, so as to allow cutting member or cutting tool in being placed to cutting head after automatic locking.

6. according to the Multifunctional rotary cutting head of claim 5, it is characterized in that, this elastic recovery device is made of spring (7), and this spring works by compression and is inserted between the support (2) of the cutting member of the internal partition (4) of shell body and inside or cutting tool.

7. according to the Multifunctional rotary cutting head of claim 1 to 6, it is characterized in that, the upper cycle of the support of this cutting member or cutting tool comprises retaining mechanism (8,9,10), be engaged into cutting thigh (3) in this shell body with the hole (1C) on the sidewall (1D) that is used for the shell body by being formed on cutting head, this cutting thigh rotates with the described support of retaining mechanism with being connected, this retaining mechanism comprises pincers tight cam (9), this clamps tight cam and is mounted to and has parallel to each other and be parallel to the ability that the plane of the rotation of cutting head pivots, the support of this cutting member or cutting tool is mounted to has the ability of carrying out the axial translation of limited amplitude in the shell body of this cutting head, this support (2) of this shell body and this retaining mechanism is arranged in the mode of complementation, so that applying simultaneously the convergence type axially-movable to described shell body and described support can allow this to clamp tight cam to lift, thereby allow to cut strand (3) introducing in the cutting head, slide or lay, apply simultaneously the separate type axially-movable to described housing and described support simultaneously and can allow to reduce described cam to realize cutting thigh locking on the active position in cutting head.

8. according to the Multifunctional rotary cutting head of claim 1 to 7, it is characterized in that, this retaining mechanism (8) comprises for guiding and lays two passages (2H) of cutting strand (3), be arranged on to these two channel parallel this cutting head rotation both sides and towards the opening (1C) of this shell body, the intake section of each opens wide in these passages, pivot cam (9) is installed in this part opposite of opening wide, this cam is subjected to the effect of spring (10), this spring tends on the direction of described open section the tight face application of force of pincers to this cam, be bonded on this and lay cutting thigh in the passage in order to press securely against the bottom of this passage, guarantee the locking of described cutting thigh with this, this enclosure interior is provided with finger-like thrust piece (12), this finger-like thrust piece is connected with the upper spacer (4) of described housing, and allow to push back this cam (9) and make this cam pivots, the upper spacer that stands to tend to make described shell body with the support of box lunch this shell body and this retaining mechanism is eliminated the pressure that is applied on this cutting thigh during near the convergence pressure of the upper surface of the support of this retaining mechanism.

9. according to the Multifunctional rotary cutting head of claim 1 to 8, it is characterized in that this cutting blade (5) is inserted between the top part and bottom part (1A, 1B) of this housing,

The lower stage of the support of-cutting member or cutting tool is made of blade support (2), this blade support and cutting blade (5) are provided with the rotation connection of this cutting blade and the compensation device (2C that lays, 5C, 6D), this device can be thrown off from its active position by manually simultaneously described shell body and described blade support being applied that convergence type moves to axial;

The axial locking compensation device of-cutting blade on the driving shaft distal portions;

-when being placed on the described blade support, blade automatically connects the automatic coupling connection device of this blade support and this blade.

10. according to the Multifunctional rotary cutting head of claim 1 to 9, it is characterized in that the middle body of this blade comprises:

-on the one hand, be used for central opening (5A), two connection holes (5F) that are arranged on described central opening both sides that driving shaft (6) is passed through, two the punching sections (13) with extra curvature edge (13A); And

-on the other hand, allow blade to insert the distal portions of this rotating shaft until the solid section of the latched position of this blade.

11. the Multifunctional rotary cutting head according to claim 1 to 10, it is characterized in that the middle body of this blade support (2) and this blade is arranged to allow by rotatablely moving of the axial relative motion of the convergence type of blade and blade support and blade subsequently described blade to be installed on the described blade support; Remove employed blade by opposite motion.

12. the Multifunctional rotary cutting head according to claim 1 to 11, it is characterized in that, cutting blade laid and is connected to the device on the blade support, comprise on the one hand two the connection short columns (14) that are arranged on described blade support below and are arranged in the axially open both sides that are arranged on this blade support, comprise on the other hand two holes of axially open (5B) both sides that are formed on this blade, driving shaft (6) distal portions is engaged in this hole.

13. the Multifunctional rotary cutting head according to claim 1 to 12, it is characterized in that, the rotation of internal blade support (2) and shell body (1A) connects by drive pin (11) realization, this drive pin be connected with the inner surface of the upper spacer of shell body and the rotation that is parallel to cutting head towards the cutting head inner orientation, these drive pins are bonded into the ability of sliding in the groove (R) that has in being arranged at blade support (2).

14. the Multifunctional rotary cutting head according to claim 1 to 13 is characterized in that, connects groove (R) and is arranged at least two opposition sides of blade support (2).

15. the Multifunctional rotary cutting head according to claim 1 to 14, it is characterized in that, driving shaft (6) passes the axial passage (2A) that is formed in the blade support (2), pass part and the described axial passage of this axle have the profile (2A, 6D) that is designed to allow to drive the complementation that this support rotates.

16. the Multifunctional rotary cutting head according to claim 1 to 15 is characterized in that, described cutting head comprises be used to limiting the device (20) of this blade support in the amplitude of passing the axial translation on the part of this driving shaft (6).

17. the Multifunctional rotary cutting head according to claim 1 to 15 is characterized in that, this cutting head comprises for the device that this blade support is locked on this driving shaft (6).

18. the Multifunctional rotary cutting head according to claim 1 to 17, it is characterized in that, permission axially is locked at device on the driving shaft (6) with cutting blade (5), on the one hand, comprise the axially open (5A) on this cutting blade, on the other hand, comprise this driving shaft away from the upper ring-shaped groove (6C) apart from its a distance, end of part (6A), the end of described driving shaft is rounded shape from described groove, this is round-shaped to be provided with two along the relative longitudinal concave groove (6D) of diameter, and the axially open of this cutting blade has the convex shape (5C) identical with the profile of described end.

19. the Multifunctional rotary cutting head according to claim 1 to 18 is characterized in that, the lower limb of the top part of this housing and this cutting blade are provided with complementary placing device.

20. the Multifunctional rotary cutting head according to claim 1 to 19, it is characterized in that, the complementary placing device of this shell body and cutting blade, on the one hand, comprise by the arc outward flange and define and be positioned at the radially alignment line both sides of the opening on this blade and equidistant two openings (13) with it, on the other hand, comprise the base portion place that is arranged on described top part along diameter relative guiding and stop tab (33).

21. the Multifunctional rotary cutting head according to claim 1 to 20, it is characterized in that, the circular upper of the bottom part of the sidewall of this housing and this slip bowl partly is equipped with complementary holding device (15,16,17,18), the joint of this complementation holding device only needs to make these two parts to move to axial, then carry out limited the rotatablely moving of amplitude, engage with the complementary member that allows described holding device.

22. the Multifunctional rotary cutting head according to claim 1 to 21, it is characterized in that, the holding device of this shell body (1A) and this bowl (1B), on the one hand, be included near the lower circular edges of inner surface of cylindrical side wall of this housing and along at least two convex shoulders along the relative rounding of diameter (16) of this lower limb, on the other hand, comprise at least two along diameter relatively and be parallel to the hook lug (15) of the Axis Extension of the bowl that slides, the free end of this hook lug is provided with locking pin or leading edge (15A) directed on the direction of this axis.

23. the Multifunctional rotary cutting head according to claim 22, it is characterized in that, it comprises the stop part (16A) of an end that is arranged on each convex shoulder (16), and this stop part limits rotatablely moving of this locking pin or leading edge (15A) when the bowl that slides enters bonding station.

24. the Multifunctional rotary cutting head according to claim 22 and 23 is characterized in that, the convex shoulder of the edge of this leading edge and the rounding of this leading edge is provided with and is advancing line-locked compensation device during the each several part of assembling shell when rotatablely moving end.

25. the Multifunctional rotary cutting head according to claim 22 to 24, it is characterized in that, the compensation device that this bottom part is locked on the top part of this housing is comprised of the plush copper on the upper surface that is arranged in this convex shoulder (16) (17) and the otch (18) that is arranged on the outward flange of this leading edge, and described locking plush copper is engaged in this otch automatically when rotatablely moving of assembling finished.

26. portable cutting equipment, for example mower, trimmer, brush saw, motorization long-handled sickle or hedge trimmer, it is characterized in that, it be equipped with realize according to one of claim 1 to 25, optionally utilize the rotary cutting head of cutting strand or cutting blade.